Hmm, how much flow are you guys having? I have a Quiet one 3000 in closed loop , 6 1/2" loc line nozzles and a Mag 3 sump return., Throttled halfway I guess. SHould be approx 800gph for QO 3000, Its in tank, in overflow so 0' head and another 150Gph? for the sump return. This on a 45g. No real strong currents near the sand tho.
I got RSA that keeps coming back, getting Green slime too now.
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Dan Pesonen
Umm, a tank or 5
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